Senior Backend Engineer, AI Tooling & Platform

Synthesia Limited; Liversedge; Remote; GBP 110,000 - 140,000; Full time

Job summary

Synthesia Limited is seeking a senior software engineer to own the Developer Platform that accelerates engineering velocity while ensuring quality. You will lead end-to-end architectural decisions, drive safe releases to customers, and embed strong engineering practices across teams.

You'll mentor engineers, participate in design reviews, and partner with leadership to shape the technical roadmap. With 7+ years in the field and hands-on work on CI/CD, observability, and infrastructure tooling,

Qualifications

• At least seven years of experience as a software engineer.
• Proven hands-on experience building and operating developer platforms and CI/CD systems.
• Experience leading adoption of AI-powered developer tools.

Responsibilities

• Own architectural decisions governing feature build, release safety and long-term support.
• Mentor engineers and embed technical practice through code review and design partnership.
• Drive roadmap and technical strategy with leadership.

Skills

CI/CD systems

Observability/metrics

Developer platforms

AI-powered tooling

Infrastructure ownership

Tools

APIs integration

Job description

Synthesia Limited is seeking a senior software engineer to own the Developer Platform that accelerates engineering velocity while ensuring quality. You will lead end-to-end architectural decisions, drive safe releases to customers, and embed strong engineering practices across teams.

You'll mentor engineers, participate in design reviews, and partner with leadership to shape the technical roadmap. With 7+ years in the field and hands-on work on CI/CD, observability, and infrastructure tooling,